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25 August 2025 | Story Martinette Brits | Photo Stephen Collett
Prof Elizabeth Erasmus
Prof Elizabeth Erasmus during her inaugural lecture, Molecules of Change: Chemistry for a Better Tomorrow, on 20 August, highlighting how innovative chemistry can turn waste into value and promote sustainable solutions.

With climate change, resource scarcity, and environmental pollution among the most pressing challenges of our time, Prof Elizabeth (Lizette) Erasmus used her inaugural lecture on Wednesday, 20 August to show how chemistry can provide powerful, practical answers. In her lecture, Molecules of Change: Chemistry for a Better Tomorrow, she traced her journey from fundamental research to pioneering innovations that turn waste into value, protect ecosystems, and improve food security.

During her talk, Prof Erasmus – Researcher in the Department of Chemistry – recalled a moment in 2018 that reshaped her career trajectory. While preparing a Sasol research grant on copper oxide nanoparticles, an entrepreneur assisting with the proposal posed a deceptively simple challenge: “So what?” “Although upsetting at first, those two words completely reshaped my outlook,” she explained. “They inspired my journey from purely academic chemistry towards more applied, impactful research – with the mission of not only advancing science, but of also improving society and the environment.”

 

From fundamental science to global solutions

Prof Erasmus began her career in organometallic chemistry, preparing and characterising complex molecules to understand their reactivity and physical properties. Later, her focus shifted to heterogeneous catalysis, where she explored nanomaterials and surface chemistry.

Her research has since evolved towards developing sustainable technologies that address urgent global challenges. One example is agricultural innovation: using green solvents to extract cellulose from wattle tree bark to create biodegradable superabsorbent polymers. “Unlike the polyacrylates in baby diapers, these SAPs degrade into nutrients for soil microbes and plants,” she explained. “By loading them with fertiliser, we develop slow-release, water-retaining materials that improve agricultural sustainability.”

Other projects include producing biochar to restore degraded soils, creating natural growth enhancers such as wood vinegar, and designing an ‘ultimate fertiliser’ that combines these products for long-term soil health. Her group also works on environmental remediation, developing hydrophobic sponges to absorb oil spills, repurposing building waste to clean polluted water, and using innovative chemistry to convert carbon dioxide into valuable products.

“We are even looking at one of the fastest-growing waste streams: e-waste,” Prof Erasmus noted. “With more gold per ton than natural ore, e-waste represents both a challenge and an opportunity. By developing porous absorbent materials, we can selectively capture and reduce gold ions directly to metallic gold – recovering a precious resource from waste.”

She concluded by crediting her team and collaborators: “This, however, is only the tip of the iceberg. The bulk of the work lies beneath the surface, carried out by dedicated students, collaborators, mentors, colleagues, friends, and family. I owe them my deepest gratitude, for they are the ones who truly sustain this journey of transforming chemistry into solutions for a better world.”

 

About Prof Erasmus

Prof Elizabeth (Lizette) Erasmus obtained all her degrees at the University of the Free State: a BSc (2001), BSc Honours in Chemistry (2002), MSc in Chemistry (2003), and a PhD in Chemistry (2005). She has published more than 80 research papers, holds an H-index of 21, and has extensive experience in supervising MSc and PhD students.

After serving as a senior researcher at the CSIR, she returned to academia at the UFS, where her international collaborations in the Netherlands and at UC Davis broadened her focus from organometallic chemistry to heterogeneous catalysis and nanochemistry. Her expertise spans organometallic chemistry, electrochemistry, surface characterisation, and nanomaterials.

News Archive

An exceptional year at Kovsies — one of the most successful years in academic achievement
2014-12-04

 

The University of the Free State (UFS) had an exceptional year, with many staff members and students performing both nationally and internationally. Considerable progress has also been made in improving the academic standards of the university.

“So far, this has been one of the most successful years in academic achievement. The UFS now has the highest academic pass rate in years, partly as a result of the admission standards which were raised four years ago.

“We now also have the highest rate of research publications, one of the highest publication figures for scholarly books in history, three Mandela Rhodes scholars and several international communication awards”, says Prof Jonathan Jansen, Vice-Chancellor and Rector of the UFS.

“The university now attracts top professors from all over the country and other parts of the world and for the first time in many years, two researchers received A-ratings from the National Research Foundation (NRF). This is the first time in the history of the UFS that two A-ratings were awarded simultaneously. The most researchers ever were rated by the NRF this year. After the constant turmoil of a few years ago, Kovsies has now become one of the most stable campuses in South Africa,” Prof Jansen says.

The impartial findings of a recent survey of UFS stakeholders showed that our values are endorsed by 92%; 86% agrees with our vision; 81% agree with our goals; 77% agree with our transformation; 78% believe that we are inclusive; and 78% applauded our overall reputation index. “These figures are very different from a few years ago when the university experienced a crisis,” he says.
 
According to Prof Jansen, the UFS’s financial situation is one of the most stable of all universities in South Africa, with a strong balance sheet and growing financial reserves – way better than before. This is exactly the reason why the UFS received confirmation from the Independent Regulatory Board of Auditors (IRBA) this year that we complied with international standards of reporting for the financial year which ended on 31 December 2013.

“I am also pleased to report that the crisis in the delivery of health services in the Free State province has been resolved due to collaboration between the UFS Management (including the Dean: Health Sciences and Head of the School of Medicine), the Department of Health and the Premier, Mr Ace Magashule. Although the loss of skilled personnel is still a concern, the Dean and Head of the School of Medicine are recreating the Health Services Platform at Universitas Hospital. However, the academic training of no undergraduate medical student or any student in the Health Sciences was influenced by the crisis in the Universitas and Pelonomi Hospitals”, he says.

The UFS is regarded around the world as a model of transformation and reconciliation in the student body. The recent SRC elections are only the most visible example of how far we have come in terms of leadership diversity. “Not a week goes by in which other universities, nationally and abroad, do not come to Kovsies to consult with us on how they can learn from us and deepen their own transformations, especially among students”, Prof Jansen says.

“The UFS will continue its model of inclusive transformation which provides opportunities for study and for employment for all South Africans, including international students and colleagues. We remain committed to our parallel-medium instruction in which Afrikaans remains a language of instruction; we are in fact the only medical school in the country that offers education and training in Afrikaans and not only English. We provide bursaries and overseas study opportunities to all our students, irrespective of race. And our ‘future professors’ programme is richly diverse as we seek the academic stars of the future. But we remain steadfast in our goal of making the UFS a top world university in its academic ambitions and its human commitments,” Prof Jansen says.

 

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